Troubleshooting Charts - Daewoo DSC-30W60N Service Manual

8. Troubleshooting charts.

AV Signal
Check video signal of IC210.
Video 1 : CVBS to pins 43 ,Y to pin 45,
and C to pin 47
Video 2 : CVBS to pin 7
Video 3 : CVBS to pin 27
Video 4 : CVBS to pin 1 ,Y to pin 3, and
C to pin 5
NO
Check each
input signal.
Check if CVBS is 1Vp-p to pin 88 of ICA1.
Check if Y output is 0.9Vp-p to Yout of PV1.
Check if the color burst of C signal is 170~180mV to Cout of PV1.
No Picture
(NTSC Signal)
OSD is on the screen.
YES
CVBS is to pin 34 of IC210.
YES
YES
YES
V1
NO
RF Signal
CVBS is to pin 13 of PW01M
YES
NO
NO
NO
NO
18
To DTV Decoder Module
NO
Check Tuner (U101).
Check IC210.
Check QCA9 , FA3, andQCA11
Check QCA4, FA1, and QCA1
Check QCA8, FA2, and QCA5